Hrithik Roshan was born on 10 January 1974 in Mumbai to a Punjabi family. His father, film director Rakesh Roshan, is the son of music director Roshanlal Nagrath; his mother, Pinky, is the daughter of producer and director J. Om Prakash. His uncle, Rajesh, is a music composer. Roshan has an older sister, Sunaina, and was educated at the Bombay Scottish School. Roshan is of part Bengali ancestry from his paternal grandmother's side. Although Roshan practices Hinduism.
Roshan's grandfather, Prakash first brought him on-screen at the age of six in the film Aasha (1980); he danced in a song enacted by Jeetendra, for which Prakash paid him Rs. 100. Roshan made uncredited appearances in various family film projects, including his father's production Aap Ke Deewane (1980). In Prakash's Aas Paas (1981), he appeared in the song "Shehar Main Charcha Hai". The actor's only speaking role during this period came when he was 12; he was seen as Govinda, the title character's adopted son, in Prakash's Bhagwaan Dada (1986). Roshan decided that he wanted to be a full-time actor, but his father insisted that he focus on his studies.
Roshan attended Sydenham College, where he took part in dance and music festivals while studying, graduating in commerce. Roshan assisted his father on four films Khudgarz (1987), King Uncle (1993), Karan Arjun (1995) and Koyla (1997) while also sweeping the floor and making tea for the crew. After pack-up, Roshan would enact Shah Rukh Khan's scenes from Koyla and film himself to make a judgment about his performance as an actor. While he assisted his father, he studied acting under Kishore Namit Kapoor.
On 20 December 2000, Roshan married Sussanne Khan in a private ceremony in Bangalore. Despite their religious difference, Roshan is a Hindu and Khan is a Muslim Roshan says that he equally valued her beliefs. The couple has two sons, Hrehaan (born in 2006) and Hridhaan (born in 2008). They separated in December 2013 and their divorce was finalized in November 2014.
Roshan was originally scheduled to make his screen debut as a lead actor opposite Preity Zinta in the canceled film Shekhar Kapur's Tara Rum Pum Pum. Instead, he starred in his father's romantic drama Kaho Naa... Pyaar Hai (2000) opposite another debutante, Ameesha Patel. For the role, Roshan received Best Male Debut and Best Actor Awards at the annual Filmfare Awards, IIFA Awards, and Zee Cine Awards. In his second release, Khalid Mohammed's crime drama Fiza, Roshan played Amaan, an innocent Muslim boy who becomes a terrorist after the 1992–93 Bombay riots. Roshan appeared in the film to expand his horizons as an actor. Co-starring Karisma Kapoor and Jaya Bachchan, Fiza was moderately successful at the box office, and Roshan's performance earned him a second nomination for Best Actor at the Filmfare ceremony. Roshan next appeared in Vidhu Vinod Chopra's action drama Mission Kashmir (2000) alongside Sanjay Dutt, Preity Zinta, and Jackie Shroff. In 2001, Roshan appeared in two films, the first of which was Subhash Ghai's Yaadein, a romantic drama which paired him with Kareena Kapoor and reunited him with Shroff and in Karan Johar's ensemble melodrama Kabhi Khushi Kabhie Gham... alongside Amitabh Bachchan, Jaya Bachchan, Shah Rukh Khan, Kajol and Kareena Kapoor. Roshan received a nomination for the Filmfare Award for Best Supporting Actor for his performance.
In 2002 Vikram Bhatt's romance Aap Mujhe Achche Lagne Lage reunited him with Ameesha Patel but failed at the box office, as did Arjun Sablok's romance Na Tum Jaano Na Hum (2002). Roshan's career began to revive with a starring role in Koi... Mil Gaya (2003). The following year, Roshan collaborated with Amitabh Bachchan and Preity Zinta on Farhan Akhtar's Lakshya (2004), Roshan was not seen on screen again until 2006, with three new releases, including a cameo at the end of the year in the romance I See You. He co-starred with Naseeruddin Shah and Priyanka Chopra in his father's superhero production Krrish. For his role as an enigmatic master thief in Dhoom 2 (2006) an action sequel co-starring Aishwarya Rai, Bipasha Basu, and Abhishek Bachchan. Roshan won his third Filmfare Award for Best Actor. In the 2007 melodrama Om Shanti Om, he made a cameo alongside several Bollywood stars.
In 2008, Roshan was cast in Ashutosh Gowariker's Jodhaa Akbar. Roshan's performance earned him his fourth Filmfare Best Actor Award as well as his first international award Best Actor at the Golden Minbar International Film Festival in Kazan, Russia. Following a small role in Zoya Akhtar's Luck by Chance in 2009, Roshan starred in and recorded "Kites in the Sky" for the multi-national romantic thriller Kites (2010). Guzaarish (2010), Zindagi Na Milegi Dobara(2011), Agneepath,(2012), Roshan appeared in the third installment of the Krrish film series Krrish 3 (2013), Bang Bang(2014), Mohenjo Daro (2016). Roshan was next seen alongside Yami Gautam in Sanjay Gupta's Kaabil (2017), a romantic thriller about a blind man who avenges the rape of his blind wife.
As of February 2018, Roshan is filming for Vikas Bahl's biographical film Super 30, which is based on the mathematician Anand Kumar. It will release on 25 January 2019. He has also confirmed to appear alongside Tiger Shroff in Yash Raj Films' untitled project, set for release in October 2019. He will also appear in the fourth installment of the Krrish film series Krrish 4 set for a release in Christmas 2020.